Yes, I believe in mediums, but they are NOT evil.
Yes the Bible states that you should not go to a medium for answers, but that is because you should instead seek answers from God. It does NOT state that they are "demons." Spirits and demons are not even related to one another.
To the person who said that Rev. Ruby should have known about her kidney infection, that's ridiculous. There are different types of mediums. Some mediums are clairvoyant, some are empathic, some are intuitive, and some (like me) are clairsentient. Each medium's gift is different and special...and it is a gift from God.
I am a Christian woman. Since being saved, I have not yet figured out how God wants me to use my Gift...but I still have it. I most certainly am not a demon, or a charlitan, nor am I evil. I find it judgemental and insulting that so many would say such things of what they do not understand.
God LOVES us. Nobody understands that better than a medium.